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Table 3 Bland-Altman analysis of inter-observer bias in sputum cell counts

From: The impact of diurnal variation on induced sputum cell counts in healthy adults

  Neutrophils (x106/g) Eosinophils(x106/g) Macrophages (x106/g)
Inter-observer bias (± 1.96 STD)* 0.94 + 0.74 −0.02 ± 0.17 1.3 ± 2.5
ICC (95% CI) 0.998 (0.996 to 0.999) 0.593 (0.231 to 0.785) 0.988 (0.978 to 0.994)
  1. * Ratio of the measurements was plotted for neutrophils and macrophages; difference of the measurements was plotted for eosinophils. Definition of abbreviations: CI = confidence interval; ICC = Intra-class correlation coefficient; STD = standard deviation of the difference.